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Description

BOSTON TF3244NW WITHAM BANK 716-1/4/248 Grand Sluice, bridge and lights 02/05/86 II Sluice bridge and lights 1764-66. Altered 1883 and C20. By John Grundy and Langley Edwards, with alterations by John Williams. Gritstone, red brick, blue brick, concrete, steel. Arranged with 3 channels on west and wider channel and lock on east bank for boats to pass through. On the south/seaward side the river west wall and 2 cutwaters are the original C18 gritstone. The eastern one has been adapted and partly rebuilt in 1883 in blue brick. On the north side it has been extended to form a lock mooring platform. The cutwaters on the north side have been partly rebuilt in concrete. The seaward doors are side hung hydraulically operated iron-bound timber doors. On the landward side the 3 channels have pulley operated drop doors operated from a steel gantry. The navigable channel has 2 sets of lock gates. The road bridge is in red brick with 4 segmental arches now supporting a C20 concrete bridge top with iron railings. At each corner, diagonally set is a c1930s panelled ashlar pier with moulded plinth and cornice, bearing openwork painted iron supports containing 4 elongated decorative pendants supporting lantern light. The construction of the grand sluice, which required an Act of Parliament, resulted in the first major expansion of the town since the Middle Ages. Beside the eastern bank wall is a stone bearing this inscription: "Lock opened by Edmund Turner Esq. on 8th December 1883. John Evelyn Williams engineer, William Rigby, contractor.". Listing NGR: TF3237844503

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